Java Script функция htmlspecialchars_decode : Программирование

function htmlspecialchars_decode(string, quote_style) {  
    // Convert special HTML entities back to characters    
    //   
    // version: 901.714  
    // discuss at: http://phpjs.org/functions/htmlspecialchars_decode  
    // +   original by: Mirek Slugen  
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)  
    // +   bugfixed by: Mateusz "loonquawl" Zalega  
    // +      input by: ReverseSyntax  
    // +      input by: Slawomir Kaniecki  
    // +      input by: Scott Cariss  
    // +      input by: Francois  
    // +   bugfixed by: Onno Marsman  
    // +    revised by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)  
    // -    depends on: get_html_translation_table  
    // *     example 1: htmlspecialchars_decode("<p>this -&gt; &quot;</p>", 'ENT_NOQUOTES');  
    // *     returns 1: '<p>this -> &quot;</p>'  
    var histogram = {}, symbol = '', tmp_str = '', entity = '';  
    tmp_str = string.toString();  
      
    if (false === (histogram = get_html_translation_table('HTML_SPECIALCHARS', quote_style))) {  
        return false;  
    }  
  
    // &amp; must be the last character when decoding!  
    delete(histogram['&']);  
    histogram['&'] = '&amp;';  
  
    for (symbol in histogram) {  
        entity = histogram[symbol];  
        tmp_str = tmp_str.split(entity).join(symbol);  
    }  
      
    return tmp_str;  
}